diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 6c9f2f1..66e427a 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -1077,7 +1077,7 @@ Test cases
       like the :func:`round` function) and not *significant digits*.
 
       If *delta* is supplied instead of *places* then the difference
-      between *first* and *second* must be less (or more) than *delta*.
+      between *first* and *second* must be less or equal to (or greater than) *delta*.
 
       Supplying both *delta* and *places* raises a ``TypeError``.